Runkeeper was placed on Earth by supreme beings of some sort. Its programmable, GPS-tracked interval runs make the iPhone into a serious, and entirely thoughtless, training tool. But Runkeeper’s ...

This video features a workout timer specifically designed for use during personal workout sessions. It was created in response to strong demand for the timer previously utilized in the creator's ...

When I first heard about a fitness routine that promises the heart-pumping benefits of a sweaty bike ride in seven minutes, I brushed it off as little more than hype. I was wrong. Turns out it's ...

When 3 p.m. rolls around, my energy levels are usually at a low — the midday slump is in full effect, and another cup of coffee would only deliver a case of caffeine jitters. What is helpful though, ...

High-intensity interval training (HIIT) is as popular as ever. Join the trend with these tips on what to wear, how to warm up, and more. No doubt you’ve heard the buzz about high-intensity interval ...

Good news: starting your running journey doesn't have to require diving in head-first and sprinting for 30 minutes straight. If you’ve never been much of a runner (or you’re starting to get back into ...

High-Intensity Interval Training (HIIT) has become one of the most effective fitness strategies in the United States for ...

High-intensity interval training (HIIT) is a cardiorespiratory training technique that involves short bursts of intense exercise followed by even shorter rest periods. You repeat this cycle several ...